Title :
High performance choppers for mining vehicles
Author_Institution :
Saminco Inc., Fort Myers, FL, USA
Abstract :
Novel chopper configurations for traction control of mining vehicles powered by battery or rectified sources from 96 V to 360 VDC are described. Design considerations for a chopper mounted inside an explosion-proof housing suitable for shuttle cars and battery-operated scoops are presented as well as methods to minimize heat losses, optimize heat dissipation, and withstand mining environment conditions. Applications of choppers to continuous miners, long-wall shearers, and tracked haulage vehicles, such as portal buses and locomotives, are discussed. Bipolar transistors and IGBTs (insulated-gate bipolar transistors) are compared for suitability for traction choppers. It is concluded that DC/DC choppers offer improved performance for mining vehicles with series DC traction motors. They can be applied to either AC or DC supplies and offer the potential of using standard 250 A modules for a variety of mining vehicles
Keywords :
DC motors; choppers (circuits); electric vehicles; insulated gate bipolar transistors; mining; power convertors; power transistors; rectifying circuits; traction; 250 AA; 96 to 360 V; DC/DC; IGBTs; battery; bipolar transistors; choppers; continuous miners; explosion-proof housing; haulage; heat dissipation; heat losses; locomotives; long-wall shearers; mining vehicles; performance; portal buses; power convertors; rectifiers; scoops; series DC motors; shuttle cars; traction control; Battery powered vehicles; Bipolar transistors; Choppers; Cooling; DC motors; Insulated gate bipolar transistors; Portals; Size control; Temperature control; Traction motors;
Conference_Titel :
Industry Applications Society Annual Meeting, 1993., Conference Record of the 1993 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-1462-X
DOI :
10.1109/IAS.1993.299224
